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Power Allocation and Bit Loading for Spatial Multiplexing in MIMO Systems
KTH, Superseded Departments, Signals, Sensors and Systems.
KTH, Superseded Departments, Signals, Sensors and Systems.ORCID iD: 0000-0003-2298-6774
2003 (English)In: Proceedings IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003, 53-56 p.Conference paper, Published paper (Refereed)
Abstract [en]

The power assignment problem is important for Multiple-Input-Multiple-Output (MIMO) systems to achieve high capacity. Although this problem is solved by well-known water filling algorithms, this does not provide an optimal solution if the system is constrained to a fixed raw bit error rate threshold and to discrete modulation orders. In this work an approximate approach, called QoS based WF, is proposed to solve the power assignment problem with such constrains. It is shown to outperform quantization of the conventional water filling solution and a well known bit loading algorithm (Chow’s algorithm) used in the Digital Subscriber Lines (DSL).

Place, publisher, year, edition, pages
2003. 53-56 p.
Keyword [en]
Bit error rate, DSL, Filling, MIMO, Power distribution, Quantization, Receiving antennas, Scattering, Sensor systems, Singular value decomposition
National Category
Signal Processing Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-89864DOI: 10.1109/ICASSP.2003.1199866OAI: oai:DiVA.org:kth-89864DiVA: diva2:503768
Conference
2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)
Note
NR 20140805Available from: 2012-02-16 Created: 2012-02-16 Last updated: 2012-03-14Bibliographically approved

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Ottersten, Björn

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